Panel: David Williamson, playwright; Graham Richardson, lobbyist and Labor legend; Amanda Vanstone, Howard government minister and former Ambassador to Italy; Gerard Henderson, historian and chief executive of the Sydney Institute; and Catherine Deveny, comedian and commentator.

Panel: John Pilger, author and film-maker; Craig Emerson, Minister for Trade; Greg Sheridan, Foreign Editor of The Australian; Helen Coonan, Liberal Senator; and Lydia Khalil, Middle East analyst.

Panelists: Anna Bligh, Queensland Premier; Barnaby Joyce, National Party Senator; Ian Nelson, Queensland Secretary, One Nation; Tim Flannery, Climate Change Commissioner; and Gina Castelain, Indigenous business woman.

Panelists: Bill Shorten, Assistant Treasurer; Malcolm Turnbull, Opposition communications spokesman; Piers Akerman, political columnist; Samah Hadid, UN youth representative; and Gretel Killeen, author, comedian and television personality.

Panelists: Gail Kelly, CEO of Westpac; Joe Hockey, shadow treasurer; Kate Ellis, Minister for the Status of Women; Mike Carlton, journalist and commentator; and Janet Albrechtsen, columnist for The Australian.

With Labor at near-record opinion-poll lows, Prime Minister Julia Gillard agreed to come on Q&A and address her critics head-on at a remarkable time in the political cycle.

Panelists: Jason Clare, Minister for Defence Materiel; Christopher Pyne, shadow education minister; Christine Milne, Deputy Leader, The Greens; Miranda Devine, columnist, The Daily Telegraph; and Lachlan Harris, political commentator and former press secretary to Kevin Rudd.

Panelists: Tanya Plibersek, Minister for Human Services; Concetta Fierravanti-Wells, shadow minister for ageing and mental health; John Della Bosca, former NSW Government minister; Grahame Morris, PR consultant and former chief of staff to John Howard; and The Chaser's Julian Morrow.

Panelists: Kevin Rudd, Foreign Minister; Julie Bishop, shadow foreign minister; Jeff Bleich, US Ambassador to Australia; Louise Adler, publisher; and Robert Manne, writer and academic.

Panelists: Penny Wong, Finance Minister; Greg Hunt, shadow environment minister; Chris Kenny, columnist with The Australian; Bess Price, Aboriginal advocate; and Graham Innes, Disability and Race Discrimination Commissioner.

Panelists: Former chief of allied operations in Iraq, Major-General Jim Molan; feminist and commentator, Eva Cox; former Army Major and author, Matina Jewell; the executive director of the Australia Defence Association, Neil James; and Afghan refugee and community advocate, Najeeba Wazefadost.

Panelists: the Minister for Regional Australia, Simon Crean; the member for Indi, Sophie Mirabella; Independent MP Tony Windsor; Nick Klomp, Dean of Science at Charles Sturt University; winemaker Eliza Brown; and Alana Johnson, cattle farmer and 2010 Rural Woman of the Year.

Panelists: Malcolm Turnbull, shadow communications minister; Lindsay Tanner, author and former finance minister; Christine Wallace, political journalist and biographer; Lydia Khalil, anti-terrorism expert; and Nazeem Hussain, comedian and Treasurer of the Victorian Islamic Council.

Panelists: Assistant Treasurer Bill Shorten; Opposition Senate Leader Eric Abetz; Anna Rose from the Youth Climate Coalition; Judge Felicity Hampel from the Victorian County Court; and John Roskam, executive director of the Institute of Public Affairs.

Panelists: Gail Dines, author of Pornland: How Porn Has Hijacked Our Sexuality; Michael Cunningham, Pulitzer Prize winner and author of The Hours; Brendan Cowell, writer and actor; Leslie Cannold, ethicist and author of The Book of Rachael; and Howard Jacobson, winner of the Man Booker Prize for The Finkler Question.

Panelists: George Brandis, shadow attorney-general; Kate Lundy, Parliamentary Secretary for Immigration; Jackie Kelly, former Howard government minister; Guy Rundle, roving reporter for Crikey; and Joe Hildebrand, columnist and blogger for The Daily Telegraph.

Panelists: Nicola Roxon, Minister for Health and Ageing; Christopher Pyne, Opposition education spokesperson; Lee Rhiannon, Greens Senator-elect; Sandy Gutman aka Austen Tayshus, comedian and author; and Paul McGeough, Fairfax foreign correspondent and author.

Panelists: Peter Garrett, Minister for Education and Minister for Early Childhood and Youth; Concetta Fierravanti-Wells, Shadow Minister for Ageing and Shadow Minster for Mental Health; Bob Katter, Independent MP; Mike Carlton, Broadcaster, Journalist and author and Natalie Pa'apa'a, singer Blue King Brown and political activist.

Panelists: Faustina 'Fuzzy' Agolley, TV host; Josh Thomas, Comedian; Ruslan Kogan, CEO Kogan; Samah Hadid, human rights activist; and James Paterson, Associate Editor of the IPA Review.

Panelists: Anthony Albanese; Minister for Infrastructure and Transport, Joe Hockey; Shadow Treasurer, Adam Bandt; Greens MP, Judith Sloan; economist and academic, Fiona Kartauskas; political cartoonist.

Panelists: Penny Wong, Finance Minister; Mathias Cormann, Shadow Assistant Treasurer; Charles Waterstreet, flamboyant barrister; Elizabeth Ann Macgregor, Director of the MCA and Stephen O’Doherty, CEO Christian Schools Australia.

Panelist: Prime Minister Julia Gillard.

Panelists: John Lennox, Oxford mathematician and Christian; John Safran, documentary maker; Eva Cox, atheist social commentator; Jacqueline Grey, Pentecostal scholar; and Susan Carland, Muslim Sociologist.

Panelists: Lara Giddings, Premier of Tasmania; Eric Abetz, Opposition Senate Leader; Christine Milne, Deputy Leader of the Greens; Peter Cundall, horticulturalist and television personality; Garry Bailey, News Ltd Editor, The Mercury; Melanie Kerrison, lawyer.

Panelists: Tanya Plibersek, Human Services Minister; Peter Dutton, Shadow Health Minister; Christine Nixon, Former Victorian Police Commissioner; Heather Ridout, Chief Executive, Australian Industry Group; Brendan O'Neill, British Editor, Spiked Online; Stephen Mayne, Crikey founder.

Panelists: Noni Hazlehurst; actor and youth advocate, Graham Richardson; former Labor minister, Mark Dreyfus; Parliamentary Secretary for Climate Change, Kelly O'Dwyer; Member for Higgins, Tom Switzer; editor The Spectator Australia.

Panelists: Tony Burke; Environment and Sustainability Minister, Malcolm Turnbull; Former Opposition leader, Deborah Cheetham; Indigenous opera singer, Stella Young; Disability advocate, Lachlan Harris; Kevin Rudd's former press secretary, Jackie Kelly; former Howard government Minister.

Panelists: Nick Minchin, Former Liberal Minister; Hanifa Deen, Pakistani-Australian author; Daniel Pipes, American political commentator; Doug Cameron, Labor Senator; and Suelette Dreyfus, academic and author of Underground.

Panelists: Don Watson, Former speechwriter for Paul Keating and distinguished writer; Kate Grenville, celebrated Australian author; Anna Funder, author of Stasiland; Malalai Joya, former Afghan parliamentarian and writer; and Omar Musa, Malaysian-Australian rapper and poet.

Panelists: Greg Combet, Minister for Climate Change and Energy Efficiency; Sophie Mirabella, shadow minister for innovation, industry and science; Clive Palmer, mining magnate; Paul Howes, National Secretary of the Australian Workers' Union; and Jessica Irvine, economics journalist.

Panelists: Germaine Greer, celebrated Australian intellectual; Barnaby Joyce, Queensland Nationals Senator; Paul Barry, journalist and author; Melinda Tankard Reist, anti-porn campaigner; and Joe Hildebrand, News Ltd columnist.

Panelists: Kristina Keneally, Former NSW Premier; Raimond Gaita, philosopher and author; Cristina Rad, video blogger and radical atheist; Jim Wallace, Managing Director of the Australian Christian Lobby; and Gerard Henderson, historian and conservative commentator.

Panelists: William McInnes, actor and author; Rob Oakeshott, Independent MP; Janet Albrechtsen, opinion columnist for The Australian; Mark Butler, Minister for Mental Health and Ageing; Helen Coonan, Former Communications Minister.

Panelists: Slavoj Zizek, firebrand philosopher; Kate Adie, BBC Foreign Correspondent; Jon Ronson, writer and psychopath expert; Mona Eltahawy, Egyptian born democracy activist; and Greg Sheridan, The Australian's foreign editor.

Panelists: Bill Shorten, Assistant Treasurer; Julie Bishop, Deputy Liberal Leader; Richard Flanagan, celebrated novelist and essayist; Ron Merkel, prominent barrister; and Caroline Overington, News Ltd journalist and author.

Panelists: Paul Henderson, Chief Minister NT; David Tollner, Country Liberal Party MP; Rosalie Kunoth-Monks, Central Australian Aboriginal elder; Fiona O'Loughlin, comedian and author; Stuart Blanch, Director, Environment Center NT; Luke Bowen, Exec Director Northern Territory Cattlemen’s Association.

Panelists: John Waters, American filmmaker; Tanya Plibersek, Human Services Minister; Christopher Pyne, Opposition education spokesperson; Kate Miller-Heidke, singer songwriter; Graham Richardson, political commentator and strategist; Judith Sloan, economist and business woman.

Panelists: Allan Asher, outgoing Ombudsman; Richard Gill, Music Director of the Victorian Opera; Anne Summers, author and feminist; Tanveer Ahmed, psychiatrist and commentator and Rebecca Weisser, Opinion Editor of The Australian.

Malcolm Turnbull, Shadow Communications Minister; Jessica Rudd, novelist; Ray Martin, journalist and author; Kate Ellis, Minister for Employment Participation; and Peter Reith, former Howard Government Minister.